If you're facing an "invalid" error while downloading your admit card, it likely indicates an issue with your login credentials, incomplete registration, or potential technical problems with the download process. First, ensure you're using the correct username (or registration number) and password, as these are case-sensitive. If you're unsure, try the "Forgot Password" option on the portal.

If you're still facing problems, check for any internet connectivity issues, slow download speeds, or potential server issues. If the problem persists, contact the exam conducting authority for assistance, especially if you suspect registration problems or technical glitches.

Hope it helps!!